rubinius/rubinius — comment on commit 9e0c903555ee89fca0183fce18934be224036f3d
File:  line 0
By jfirebaugh:

Yeah, I'm not sure why the rubinius.rb version exists. It was added after the 1.8 and 1.9 versions already existed, in 0549a6bff8a3dc3c71d4e51a6672f272fb041909 by @evanphx with the message "Cleanup Kernel, part deux". Specs pass without it. Unless Evan chimes in, I'd say you can remove it.